Hi Stefan,

probably. Its 2 compute nodes and there are jobs running. Our epilogue script 
will drop the caches, at which point I indeed expect the warning to disappear. 
We have no time limit on these nodes though, so this can be a while. I was 
hoping there was an alternative to that, say, a user-level command that I could 
execute on the client without possibly affecting other users jobs.

Thanks and best regards,
=================
Frank Schilder
AIT Risø Campus
Bygning 109, rum S14

________________________________________
From: Stefan Kooman <ste...@bit.nl>
Sent: Tuesday, October 17, 2023 11:13 AM
To: Frank Schilder; ceph-users@ceph.io
Subject: Re: [ceph-users] stuck MDS warning: Client HOST failing to respond to 
cache pressure

On 17-10-2023 09:22, Frank Schilder wrote:
> Hi all,
>
> I'm affected by a stuck MDS warning for 2 clients: "failing to respond to 
> cache pressure". This is a false alarm as no MDS is under any cache pressure. 
> The warning is stuck already for a couple of days. I found some old threads 
> about cases where the MDS does not update flags/triggers for this warning in 
> certain situations. Dating back to luminous and I'm probably hitting one of 
> these.
>
> In these threads I could find a lot except for instructions for how to clear 
> this out in a nice way. Is there something I can do on the clients to clear 
> this warning? I don't want to evict/reboot just because of that.

echo 2 > /proc/sys/vm/drop_caches on the clients .... does that help?

Gr. Stefan
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